How is the flood hazard area subject to high-velocity wave action identified?

The identification of flood hazard areas subject to high-velocity wave action is primarily conducted through Flood Insurance Rate Maps (FIRMs). These maps are created by the Federal Emergency Management Agency (FEMA) and illustrate flood zones, as well as the different levels of risk associated with those zones. FIRMs designate specific areas where the potential for flooding, including the impact of wave action, is significant.

The maps provide essential information necessary for planning, risk assessment, and insurance purposes. In particular, areas that are exposed to high-velocity wave action, often associated with coastal zones, are marked on these maps, allowing developers and inspectors to understand the risks involved in construction and land use in those regions.

While local building codes, environmental impact assessments, and historical data may provide additional relevant information and context, FIRMs serve as the authoritative source for identifying the specific locations where flood hazards due to wave action are present.